CN104610744A - Flame-retardant silicon rubber sleeve and preparation method thereof - Google Patents
Flame-retardant silicon rubber sleeve and preparation method thereof Download PDFInfo
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- CN104610744A CN104610744A CN201510011680.1A CN201510011680A CN104610744A CN 104610744 A CN104610744 A CN 104610744A CN 201510011680 A CN201510011680 A CN 201510011680A CN 104610744 A CN104610744 A CN 104610744A
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Abstract
The invention discloses a flame-retardant silicon rubber sleeve and a preparation method thereof. The preparation method comprises the following steps: a, mixing silicon rubber, fumed silica, chlorinated paraffin, aluminium hydroxide, zinc borate, boehmite and sodium molybdate to prepare a masterbatch; b, mixing a vulcanizing agent and the masterbatch to perform primary vulcanization treatment; c, performing secondary vulcanization treatment on the masterbatch subjected to the primary vulcanization treatment in a baking oven to prepare flame-retardant silicon rubber; d, performing extrusion molding on the flame-retardant silicon rubber to prepare the flame-retardant silicon rubber sleeve. The flame-retardant silicon rubber sleeve prepared by the method has excellent flame retardancy.
Description
Technical field
The present invention relates to rubber, particularly, relate to a kind of flame-proof silicon rubber cover.
Background technology
The buffer layer of cable is made up of rubber mostly, and existing cushion rubber layer only can play shock absorption, and when accident is on fire, rubber then can at high temperature be decomposed into flammable lower-molecular substance.Flammable lower-molecular substance carries out violent oxidizing reaction with oxygen with then interrogating speed, oxidizing reaction releases the decomposition that a large amount of heat then can promote rubber further, and resultant such as low mass molecule alcohol, aldehyde in simultaneous oxidation reaction also can carry out oxidizing reaction until rubber burnouts with oxygen.
Summary of the invention
The object of this invention is to provide a kind of flame-proof silicon rubber cover and preparation method thereof, the flame-proof silicon rubber cover obtained by the method has excellent flame retardant resistance.
To achieve these goals, the invention provides the preparation method of a kind of flame-proof silicon rubber cover, described preparation method comprises:
A, make rubber master batch by mixing to silicon rubber, thermal silica, clorafin, aluminium hydroxide, zinc borate, boehmite and Sodium orthomolybdate;
B, by vulcanizing agent and described milling maternal rubber to carry out primary vulcanization process;
C, the described rubber master batch after primary vulcanization is carried out second time sulfuration in an oven to make flame-proof silicon rubber;
D, described flame-proof silicon rubber cover is made in described flame-proof silicon rubber extrusion moulding.
Present invention also offers and additionally provide a kind of flame-proof silicon rubber cover, described flame-proof silicon rubber cover is prepared from by above-mentioned method.
Pass through technique scheme, flame-proof silicon rubber cover provided by the invention by the synergy of silicon rubber, thermal silica, clorafin, aluminium hydroxide, zinc borate, boehmite, vulcanizing agent and Sodium orthomolybdate, can interrogate when making this flame-proof silicon rubber be enclosed within burning decompose water outlet, fire-retardant gas (as nitrogen) fastly, to form sintering at rubber surface fast and generate halogen radical thus effectively stop the carrying out of combustion reactions.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides the preparation method of a kind of flame-proof silicon rubber cover, described preparation method comprises:
A, make rubber master batch by mixing to silicon rubber, thermal silica, clorafin, aluminium hydroxide, zinc borate, boehmite and Sodium orthomolybdate;
B, by vulcanizing agent and described milling maternal rubber to carry out primary vulcanization process;
C, the described rubber master batch after primary vulcanization is carried out second time sulfuration in an oven to make flame-proof silicon rubber;
D, described flame-proof silicon rubber cover is made in described flame-proof silicon rubber extrusion moulding.
In step a of the present invention, the consumption of each raw material can be selected in wide scope, but in order to make the flame-proof silicon rubber cover obtained, there is more excellent flame retardant resistance, preferably, in step a, relative to the described silicon rubber of 100 weight parts, the consumption of described thermal silica is 160-190 weight part, the consumption of described clorafin is 3-7 weight part, the consumption of described aluminium hydroxide is 35-55 weight part, the consumption of described zinc borate is 4-8 weight part, and the consumption of described boehmite is 7-10 weight part, and the consumption of described Sodium orthomolybdate is 0.3-1.2 weight part.
In step b of the present invention, the consumption of each raw material can be selected in wide scope, but in order to make the flame-proof silicon rubber cover obtained have more excellent flame retardant resistance, preferably, in stepb, relative to the described rubber master batch of 100 weight parts, the consumption of described vulcanizing agent is 0.2-0.8 weight part.
In the present invention, described clorafin can be one-component also can be that various ingredients mixes, but in order to make the flame-proof silicon rubber cover obtained have more excellent flame retardant resistance, preferably, described clorafin is selected from clorafin-50 and chlorinated paraffin-70.Have more excellent flame retardant resistance to improve obtained flame-proof silicon rubber cover further, more preferably, described clorafin-50 is 1:1.5-2 with the weight ratio of described chlorinated paraffin-70.
In the present invention, the concrete component of described vulcanizing agent can be selected in wide scope, but in order to make the flame-proof silicon rubber cover obtained, there is more excellent flame retardant resistance, preferably, described vulcanizing agent be selected from dual-tert-butyl cumene hydroperoxide, dicumyl peroxide, benzoyl peroxide and 2,4-dichloride benzoyl peroxide one or more.Have more excellent flame retardant resistance to improve obtained flame-proof silicon rubber cover further, more preferably, described vulcanizing agent contains described dual-tert-butyl cumene hydroperoxide, dicumyl peroxide, benzoyl peroxide and 2,4-dichloride benzoyl peroxide; And, relative to the described dual-tert-butyl cumene hydroperoxide of 1 weight part, the consumption of described dicumyl peroxide is 0.5-0.6 weight part, and the consumption of described benzoyl peroxide is 0.1-0.2 weight part, the consumption of described 2,4-dichloride benzoyl peroxides is 0.2-0.4 weight part.
In the present invention, the actual conditions of primary vulcanization can be selected in wide scope, but in order to make the flame-proof silicon rubber cover obtained, there is more excellent flame retardant resistance, preferably, described primary vulcanization meets the following conditions: curing temperature is 120-170 DEG C, curing time is 15-20min, and sulfide stress is 10-12Mpa.
In the present invention, the actual conditions of second time sulfuration can be selected in wide scope, but in order to make the flame-proof silicon rubber cover obtained have more excellent flame retardant resistance, preferably, described second time sulfuration meets the following conditions: curing temperature is 210-220 DEG C, and curing time is 3-5h.
Present invention also offers a kind of flame-proof silicon rubber cover, described flame-proof silicon rubber cover is prepared from by above-mentioned method.
Below will be described the present invention by embodiment.In following examples, self-extinguishing time parameter is recorded by the method for UL-94, and oxygen index parameter is recorded by the method for GB/T10707-89.
Embodiment 1
A, be the silicon rubber 100kg of SE6035 by the trade mark, the trade mark is thermal silica 180kg, 5kg clorafin-50, aluminium hydroxide 45kg, zinc borate 6kg, the boehmite 9kg of A200 and Sodium orthomolybdate 0.8kg is mixing makes rubber master batch;
B, under 150 DEG C and 11Mpa, dual-tert-butyl cumene hydroperoxide 0.5kg and the mixing 17min of above-mentioned rubber master batch 100kg is carried out primary vulcanization process;
C, at 215 DEG C, the described rubber master batch after primary vulcanization is carried out in an oven second time sulfuration 4h to make flame-proof silicon rubber;
D, above-mentioned flame-proof silicon rubber extrusion moulding made flame-proof silicon rubber cover A1.
The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Embodiment 2
A, be the silicon rubber 100kg of SE6035 by the trade mark, the trade mark is thermal silica 190kg, 7kg clorafin-50, aluminium hydroxide 55kg, zinc borate 8kg, the boehmite 10kg of A200 and Sodium orthomolybdate 1.2kg is mixing makes rubber master batch;
B, under 170 DEG C and 12Mpa, dual-tert-butyl cumene hydroperoxide 0.8kg and the mixing 20min of above-mentioned rubber master batch 100kg is carried out primary vulcanization process;
C, at 220 DEG C, the described rubber master batch after primary vulcanization is carried out in an oven second time sulfuration 5h to make flame-proof silicon rubber;
D, above-mentioned flame-proof silicon rubber extrusion moulding made flame-proof silicon rubber cover A2.
The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Embodiment 3
A, be the silicon rubber 100kg of SE6035 by the trade mark, the trade mark is thermal silica 160kg, 3kg clorafin-50, aluminium hydroxide 35kg, zinc borate 4kg, the boehmite 7kg of A200 and Sodium orthomolybdate 0.3kg is mixing makes rubber master batch;
B, under 120 DEG C and 10Mpa, dual-tert-butyl cumene hydroperoxide 0.2kg and the mixing 15min of above-mentioned rubber master batch 100kg is carried out primary vulcanization process;
C, at 210 DEG C, the described rubber master batch after primary vulcanization is carried out in an oven second time sulfuration 3h to make flame-proof silicon rubber;
D, above-mentioned flame-proof silicon rubber extrusion moulding made flame-proof silicon rubber cover A3.
The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Embodiment 4
Obtained flame-proof silicon rubber cover A4 is carried out according to the method for embodiment 1, unlike, clorafin-50 is changed into clorafin-50 and chlorinated paraffin-70 (weight ratio of the two is 1:1.7).The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Comparative example 5
Obtained flame-proof silicon rubber cover A5 is carried out according to the method for embodiment 1, unlike, dual-tert-butyl cumene hydroperoxide is changed into dual-tert-butyl cumene hydroperoxide, dicumyl peroxide, benzoyl peroxide and 2,4-dichloride benzoyl peroxide (weight ratio of four is 1:0.5:0.15:0.3).The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Comparative example 1
Obtained flame-proof silicon rubber cover B1 is carried out according to the method for embodiment 1, unlike, without clorafin.The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Comparative example 2
Obtained flame-proof silicon rubber cover B2 is carried out according to the method for embodiment 1, unlike, without boehmite.The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Comparative example 3
Obtained flame-proof silicon rubber cover B3 is carried out according to the method for embodiment 1, unlike, without Sodium orthomolybdate.The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Comparative example 4
Obtained flame-proof silicon rubber cover B4 is carried out according to the method for embodiment 1, unlike, without aluminium hydroxide.The flame retardant properties parameter of this flame-proof silicon rubber cover is in table 1.
Table 1
| A1 | A2 | A3 | A4 | A5 | B1 | B2 | B3 | B4 | |
| Self-extinguishing time/s | 6 | 4 | 5 | 3 | 2 | 25 | 20 | 31 | 28 |
| Limiting oxygen index(LOI)/% | 26 | 27 | 25 | 29 | 30 | 17 | 20 | 19 | 18 |
From above-described embodiment and comparative example, flame-proof silicon rubber cover provided by the invention has excellent flame retardant effect.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a preparation method for flame-proof silicon rubber cover, it is characterized in that, described preparation method comprises:
A, make rubber master batch by mixing to silicon rubber, thermal silica, clorafin, aluminium hydroxide, zinc borate, boehmite and Sodium orthomolybdate;
B, by vulcanizing agent and described milling maternal rubber to carry out primary vulcanization process;
C, the described rubber master batch after primary vulcanization is carried out second time sulfuration in an oven to make flame-proof silicon rubber;
D, described flame-proof silicon rubber cover is made in described flame-proof silicon rubber extrusion moulding.
2. preparation method according to claim 1, wherein, in step a, relative to the described silicon rubber of 100 weight parts, the consumption of described thermal silica is 160-190 weight part, and the consumption of described clorafin is 3-7 weight part, the consumption of described aluminium hydroxide is 35-55 weight part, the consumption of described zinc borate is 4-8 weight part, and the consumption of described boehmite is 7-10 weight part, and the consumption of described Sodium orthomolybdate is 0.3-1.2 weight part.
3. preparation method according to claim 2, wherein, in stepb, relative to the described rubber master batch of 100 weight parts, the consumption of described vulcanizing agent is 0.2-0.8 weight part.
4. preparation method according to claim 3, wherein, described clorafin is selected from clorafin-50 and chlorinated paraffin-70.
5. preparation method according to claim 4, wherein, described clorafin-50 is 1:1.5-2 with the weight ratio of described chlorinated paraffin-70.
6. preparation method according to claim 3, wherein, described vulcanizing agent be selected from dual-tert-butyl cumene hydroperoxide, dicumyl peroxide, benzoyl peroxide and 2,4-dichloride benzoyl peroxide one or more.
7. preparation method according to claim 6, wherein, described vulcanizing agent contains described dual-tert-butyl cumene hydroperoxide, dicumyl peroxide, benzoyl peroxide and 2,4-dichloride benzoyl peroxide; And, relative to the described dual-tert-butyl cumene hydroperoxide of 1 weight part, the consumption of described dicumyl peroxide is 0.5-0.6 weight part, and the consumption of described benzoyl peroxide is 0.1-0.2 weight part, the consumption of described 2,4-dichloride benzoyl peroxides is 0.2-0.4 weight part.
8. preparation method according to claim 3, wherein, described primary vulcanization meets the following conditions: curing temperature is 120-170 DEG C, and curing time is 15-20min, and sulfide stress is 10-12Mpa.
9. preparation method according to claim 3, wherein, described second time sulfuration meets the following conditions: curing temperature is 210-220 DEG C, and curing time is 3-5h.
10. a flame-proof silicon rubber cover, is characterized in that, described flame-proof silicon rubber cover is prepared from by the method described in any one in claim 1-9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106280495A (en) * | 2016-08-26 | 2017-01-04 | 山东华夏神舟新材料有限公司 | A kind of high strength and high hardness Fluorosilicone rubber composition and preparation method thereof |
| CN108976503A (en) * | 2018-07-03 | 2018-12-11 | 贵州大学 | A kind of method of ardealite and rubber flame-retarded dose of flyash relieving haperacidity coproduction |
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| CN103265815A (en) * | 2013-05-23 | 2013-08-28 | 苏州富通高新材料科技股份有限公司 | High temperature resistant silicon rubber and preparation method thereof |
| CN103467838A (en) * | 2013-09-30 | 2013-12-25 | 深圳市沃尔核材股份有限公司 | Moistureproof type low-smoke halogen-free flame-retarding wire and cable insulation material used for building |
| CN103819758A (en) * | 2014-02-26 | 2014-05-28 | 秦荣勤 | Flame-retardant fire-resistant rubber composition and preparation method thereof, and flame-retardant fire-resistant rubber wrapping tape |
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- 2015-01-09 CN CN201510011680.1A patent/CN104610744A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103265815A (en) * | 2013-05-23 | 2013-08-28 | 苏州富通高新材料科技股份有限公司 | High temperature resistant silicon rubber and preparation method thereof |
| CN103467838A (en) * | 2013-09-30 | 2013-12-25 | 深圳市沃尔核材股份有限公司 | Moistureproof type low-smoke halogen-free flame-retarding wire and cable insulation material used for building |
| CN103819758A (en) * | 2014-02-26 | 2014-05-28 | 秦荣勤 | Flame-retardant fire-resistant rubber composition and preparation method thereof, and flame-retardant fire-resistant rubber wrapping tape |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106280495A (en) * | 2016-08-26 | 2017-01-04 | 山东华夏神舟新材料有限公司 | A kind of high strength and high hardness Fluorosilicone rubber composition and preparation method thereof |
| CN108976503A (en) * | 2018-07-03 | 2018-12-11 | 贵州大学 | A kind of method of ardealite and rubber flame-retarded dose of flyash relieving haperacidity coproduction |
| CN108976503B (en) * | 2018-07-03 | 2020-11-10 | 贵州大学 | Method for co-production of rubber flame retardant by using phosphogypsum and fly ash to prepare acid |
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Address after: 241000 Wuhu high tech Development Zone, Anhui, No. 15 Zhanghe Road Applicant after: WUHU SPACEFLIGHT SPECIAL CABLE FACTORY CO., LTD. Address before: 241000 Wuhu high tech Development Zone, Anhui, No. 15 Zhanghe Road Applicant before: Wuhu Aerospace Special Cable Factory |
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Application publication date: 20150513 |